DSolveChangeVariables

DSolveChangeVariables[dsolve,u,t,trans] changes the solution function in dsolve to u(t) using the transformation trans.

DSolveChangeVariables[dsolve,{u1,u2,…},t,trans] changes the solution functions in the system to {u1(t),…,un(t)}.

DSolveChangeVariables[dsolve,u,{t1,…,tn},trans] changes the solution function in the partial differential equation to u(t1,…,tn).

Please visit the official Wolfram Language Reference for more details and examples on core symbols.